Suppose a ray strikes the left face of the prism in the figure( Figure 1 ) at 45

Question

Suppose a ray strikes the left face of the prism in the figure(Figure 1) at 45.0? as shown, but is totally internally reflected at the opposite side.

Part A

If the prism apex angle (at the top) is ? = 66.2?, what can you say about the index of refraction of the prism?

Figure 1 of 1

Suppose a ray strikes the left face of the prism in the figure(Figure 1) at 45.0? as shown, but is totally internally reflected at the opposite side.

Part A

If the prism apex angle (at the top) is ? = 66.2?, what can you say about the index of refraction of the prism?

nmin =

Figure 1 of 1

Suppose a ray strikes the left face of the prism in the figure(Figure 1) at 45.0? as shown, but is totally internally reflected at the opposite side. If the prism apex angle (at the top) is ? = 66.2?, what can you say about the index of refraction of the prism?

Explanation / Answer

Set up is enough: n sin ?2 = sin ?1
?1 = 45

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